English: There are four primary education service area offices (PESA) in Udon Thani Province, as illustrated, responsible for primary schools affiliated with the Office of Basic Education Commission of Thailand (OBEC).
Udon Thani PESA 1 (blue) covers districts of Mueang Udon Thani, Nong Wua So, Phen, and Sang Khom.
Udon Thani PESA 2 (yellow) covers districts of Kumphawapi, Non Sa-at, Nong Saeng, Prachaksinlapakhom, Si That, and Wang Sam Mo.
Udon Thani PESA 3 (green) covers districts of Ban Dung, Chai Wan, Ku Kaeo, Nong Han, Phibun Rak, and Thung Fon.
Udon Thani PESA 4 (red) covers districts of Ban Phue, Kut Chap, Na Yung, and Nam Som.